Heating pipe for vitreous enamel electric heating membrane

The utility model relates to an electric heating device, wherein the substrate material of vitreous enamel electrothermal film heating tube is an insulated vitreous enamel tube, the outer surface of the vitreous enamel is coated with heat-resistant film-plating liquid so as to form the electrothermcal film, the electrothermcal film is communicated with electrodes. The electric heating device has simple structure. Compared with the traditional resistance wire heating tube, the vitreous enamel electrothermal film heating tube has the advantages of water and electricity separation, good safety, good conductivity, high heat exchange rate, rapid temperature rasing, and long service life, thereby being in particular suitable for instant type water heater. Compared with the quartz electrothermal film, the vitreous enamel electrothermal film heating tube has the advantages of good anti-vibration, good impact resistance, easy installation and uneasy crack, the electric heating device can not only be used separately but also can be integrated for use, thereby having wider application, the electric heating device is suitable for various electricthermal furnaces for warming and water heaters for bathing.